We divide 878190 by 45
We want to figure out the number of times 878190 can be divided by 45.

Moving on to step 1:
8 divided by 45 is 0 with a remainder of 8.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 8 to get 8.
Grab the next digit (7) from the dividend, add it to 8, then carry on: 87 / 45

Let's proceed to step 2:
If we divide 87 by 45, we get 1 and a remainder of 42.
Put 1 as the next digit of the answer. 
Result so far: 1.0
Subtract 45 from 87 to get 42.
Fetch the next digit (8) from the dividend, attach it to 42 and continue: 428 / 45

On to step 3:
When dividing 428 by 45, we get 9 with a remainder of 23.
The next digit of our result is 9. 
Result so far: 19.0
Subtract 405 from 428 to get 23.
Append the next digit (1) from the dividend to 23 and continue with: 231 / 45

Let's proceed to step 4:
45 goes into 231 5 times with a remainder of 6.
The number 5 becomes the next digit in our result. 
Result so far: 195.0
If we take 225 away from 231, we end up with 6.
Bring next digit (9) of the dividend behind the 6 and repeat the process: 69 / 45

Advancing to step 5:
If we divide 69 by 45, we get 1 and a remainder of 24.
Write down 1 as next digit of the result. 
Result so far: 1951.0
Deduct 45 from 69 and we're left with 24.
Bring next digit (0) of the dividend behind the 24 and repeat the process: 240 / 45

On to step 6:
If we divide 240 by 45, we get 5 and a remainder of 15.
Use 5 as the next digit of our solution. 
Result so far: 19515.0
Deduct 225 from 240 and we're left with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

Moving on to step 7:
45 can be fit into 150 3 times, resulting in a remainder of 15.
Write down 3 as next digit of the result. 
Result so far: 19515.3
Subtracting 135 from 150 leaves us with 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

On to step 8:
45 goes into 150 3 times with a remainder of 15.
Put 3 as the next digit of the answer. 
Result so far: 19515.33
If we subtract 135 from 150, we get 15.
Since there are no more digits in the dividend, we add a zero to the remainder making it 150, and continue the process.

In conclusion, the division gives 19515.33 with a balance of 0.015.